WO2020011047A1

WO2020011047A1 - Tissue ablation, cutting and fusion system

Info

Publication number: WO2020011047A1
Application number: PCT/CN2019/094244
Authority: WO
Inventors: 周星
Original assignee: 周星
Priority date: 2018-07-07
Filing date: 2019-07-01
Publication date: 2020-01-16
Also published as: CN110680496A

Abstract

The tissue ablation, cutting and fusion system of the present invention comprises a handle assembly, a shaft assembly, a working portion, a circuit system, and a power source. The circuit system is provided with an elastic electrical interface device, and the elastic electrical interface device comprises a conductive joint, an elastic conductive mechanism and an electrical interface. The conductive joint comprises a rotor and a stator. When a shaft rod rotates, the rotor may rotate synchronously, and lines connecting the conductive joint and a rear end of the shaft rod are synchronized, which may prevent wire breakage or the loosening of solder joints that may be caused by the twisting of the lines. The elastic conductive mechanism is a conductive mechanism capable of elastically deforming under the action of an external force while keeping the circuit uninterrupted. When the shaft rod translates, the elastic conductive mechanism elastically deforms and moves reciprocatingly, thus overcoming fatigue breakage or the loosening of solder joints caused by the constant expansion and contraction of a wire during a current wire connection. The tissue ablation, cutting and fusion system of the present invention maintains good controllability of the device, and also improves the reliability of a circuit.

Description

Tissue ablation, cutting and fusion system

Technical field

The invention relates to an electrosurgical instrument, particularly a surgical instrument used for tissue ablation, cutting and fusion used in surgery.

Background technique

In surgery, tissue ablation, cutting and fusion is a very important tissue processing process. Among the commonly used tissue ablation, cutting and fusion techniques, electric heating tissue ablation is one of the important techniques. Protein modification to achieve tissue ablation, cutting and fusion processes.

In current methods of electrically heated tissue ablation, the shaft has a variety of movements, such as the closing and opening of the work surface through the translational movement of the shaft, and the rotation of the work surface through the rotation of the shaft. During these movements, the circuit system in the system also needs to undergo translational reciprocating and rotational movements to ensure that the circuit system is connected. These frequent movements have a great impact on the circuit interface, and it is very easy to cause the wiring points to fall off due to fatigue fracture caused by reciprocating movements, causing the power to the instrument to be interrupted, resulting in the interruption of the surgical process, and there is a potential safety hazard in clinical use .

Therefore, it is necessary to improve the prior art tissue ablation, cutting and fusion systems, and in particular, it is necessary to further improve its circuit system.

Summary of the invention

The tissue ablation, cutting and fusion system of the invention adopts the design of an elastic electrical interface. When the shaft rotates, the rotor and shaft of the conductive joint can rotate synchronously, and the electrical wires connecting the conductive joint and the rear end of the shaft can be synchronized, which can avoid Twisted wires may cause wire breakage or loose solder joints. When the inner rod is reciprocated in translation, the elastic conductive mechanism is elastically deformed to perform a reciprocating action, which overcomes fatigue fracture or loosening of the solder joint caused by the constant expansion and contraction of the wire when the wire is connected. The tissue ablation, cutting and fusion system of the invention not only maintains the good maneuverability of the instrument, but also improves the reliability of the circuit.

The tissue ablation, cutting and fusion system of the present invention is characterized by:

A. The tissue ablation, cutting and fusion system 900 includes a handle assembly 100, a shaft assembly 200, a work section 300, a circuit system 400, and a power supply 500:

B. The handle assembly 100 includes a trigger assembly 11, a gear adjustment button 12, a shaft connection mechanism 13, and a housing 14; the trigger assembly 11, a gear adjustment button 12, and a shaft connection mechanism 13 are provided in the housing 14 on;

C. The shaft assembly 200 includes a shaft 21 and a connection assembly 22;

D. The working part 300 includes at least two working surfaces 31, and at least one of the working surfaces 31 is provided with an electric heating device 32;

E. The circuit system 400 includes a line 41, a controller 42, and a flexible electrical interface device 43; the circuit system 400 is connected to the power source 500 through the flexible electrical interface device 43;

F. The proximal end of the shaft assembly 200 is connected to the handle assembly 100 through the shaft connection mechanism 13; the distal end of the shaft assembly 200 is connected to the working part 300; the electric heating device 32 is connected through the The circuit system 400 is connected to the power source 500.

The circuit system 400 of the tissue ablation, cutting and fusion system of the present invention is designed with the special elastic electrical interface device 43. The elastic electrical interface device 43 will elastically deform under the action of external force, and perform reciprocating movements while maintaining Good electrical transmission capacity, especially the transmission capacity of large current, such as 5A-10A, overcomes the current shortcomings of fatigue fracture or loose solder joints or joint heating due to the continuous expansion and contraction of the wire. The tissue ablation, cutting and fusion system of the invention not only maintains the good maneuverability of the instrument, but also improves the reliability of the circuit.

The handle assembly 100 further includes a fixing mechanism 15; the trigger assembly 11 is fixedly mounted on the casing (14) through the fixing mechanism 15. When assembling, the trigger assembly 11 can be embedded or fixed in the installation groove of the fixing mechanism 5 and assembled into a whole body and then fixed on the casing 14. The assembly process is simpler and the fixing is more reliable.

The trigger assembly 11 includes a trigger 11-1, a rocker arm 11-2, and a slider 11-3; the trigger 11-1 is provided with a trigger shaft 11-1-1 and a rocker drive shaft 11-1-2; The rocker arm 11-2 includes a rocker arm fulcrum 11-2-1, a movement chute 11-2-2, and a push block card slot 11-2-3; and the slider 11-3 includes a movement push block 11-3. -1. Sliding convex step 11-3-2 and working boss 11-3-3; the trigger rotating shaft 11-1-1 and the fixing mechanism 15 are connected together and fixed on the housing 14; One end of the rocker drive shaft 11-1-2 is connected to the trigger 11-1, and the other end is embedded in the movement chute 11-2-2; the rocker fulcrum 11-2-1 and the The fixing mechanism 15 is connected together, and the rocker arm 11-2 is movably installed in the housing 14; the moving pusher block 11-3-1 is embedded in the pusher block slot 11-2-3 Inside, the sliding convex step 11-3-2 is embedded in the positioning chute 15-1 of the fixing mechanism 15 and connected to the fixing mechanism 15; the trigger 11-1 is pulled, and the trigger 11-1 rotates around the trigger rotating shaft 11-1-1, drives the rocker arm drive shaft 11-1-2 to reciprocate along the moving chute 11-2-2, thereby pushing the rocker arm 11-2 Around The arm fulcrum 11-2-1 swings back and forth; the reciprocating swing of the rocker arm 11-2 pushes the moving pusher block 11-3-1 embedded in the pusher block slot 11-2-3 to drive the slider The back-and-forth linear movement along the positioning chute 15-1, thereby closing and opening the working surface 31 of the working part 300.

The gear adjustment button 12 is connected to the controller 42 through the line 41. The doctor can select different output powers through the gear adjustment button 12 according to the specific conditions of the surgical process, which makes the clinical operation more convenient.

The gear adjustment button 12 includes a cutting gear 12-1 and a fusion gear 12-2; the cutting gear 12-1 and the fusion gear 12-2 are linked together by a lever mechanism 12-3, so that the cutting gear 12- 1 and fusion gear 12-2 cannot be pressed simultaneously. The cutting gear 12-1 and the fusion gear 12-2 cannot be pressed at the same time, which can ensure that no misoperation occurs during clinical use.

The handle assembly 100 further includes a reset mechanism 16. When the trigger 11-1 is released, the reset mechanism 16 can automatically reset the trigger 11-1 through a reset force, which greatly improves the safety, convenience and comfort during use. The reset mechanism 16 may be in various forms such as a torsion spring mechanism, or a spring mechanism, or an elastic body mechanism. Those skilled in the art can design various reset mechanisms according to needs, and set one or more of the reset mechanisms as required. The reset mechanism 16 is installed in different parts of the instrument without departing from the protection scope of the present application.

The handle assembly 100 further includes a force limiting mechanism 17. The force-limiting mechanism 17 can limit the working pressure transmitted to the working part 300 through the trigger assembly 11. When the force-limiting mechanism 17 acts, the operator applies the trigger 11-1 to the triggering mechanism 11-1 The maximum working pressure of the working part 300 is constant. Generally, during the ablation, cutting and fusion of soft tissue, the maximum working pressure can be limited to 100N or less. By adjusting or selecting different force limiting mechanisms 17, the clamping force of the working part 300 on the clamped tissue during operation can be set. Of course, those skilled in the art can set the limit of the maximum working pressure defined by the force limiting mechanism 17 as needed, without departing from the protection scope of the present application. The force-limiting mechanism 17 can be various forms of structures such as a spring force-limiting mechanism, an elastic body force-limiting mechanism, or a compression spring force-limiting mechanism. Those skilled in the art can also design other various types of force-limiting mechanisms. Without departing from the scope of protection of this application.

The shaft assembly 200 further includes a knob 23; the knob 23 can drive the shaft 21 to rotate.

The shaft 21 includes an inner rod 21-1 and an outer rod 21-2; the working surfaces 31 are connected to the distal ends of the inner rod 21-1 and the outer rod 21-2, respectively; when the inner rod 21- 1 When the proximal end is moved, the working surface 31 is closed; when the inner rod 21-1 is moved toward the far end, the working surface 31 is opened; turning the knob 23 can drive the inner rod 21-1 and The outer rod 21-2 rotates, and further drives the working surface 31 to perform a rotary motion.

During clinical use, the working surface 31 needs to be rotated to an appropriate position according to the different parts of the tissue that need to be processed. The shaft 21 can be driven by the knob 23 to move the working surface 31 to Right direction and location.

The elastic electrical interface device 43 includes a conductive joint 43-1, an elastic conductive mechanism 43-2, and an electrical interface 43-3. One end of the conductive joint 43-1 is connected to the electric heating device 32 through the line 41, and another One end is connected to the elastic conductive mechanism 43-2; the other end of the elastic conductive mechanism 43-2 is connected to the electrical interface 43-3, and the electrical interface 43-3 is connected to the power supply 500.

The conductive joint 43-1 includes a rotor 43-1-1 and a stator 43-1-2; the rotor 43-1-1 can rotate; the distal end of the rotor 43-1-1 and the shaft The proximal ends of 21 are connected together. When the shaft 21 rotates, the rotor 43-1-1 can rotate synchronously; the proximal end of the stator 43-1-2 and the far end of the elastic conductive mechanism 43-2 Ends are connected together.

Because the rotor 43-1-1 can rotate synchronously with the shaft 21, the line 41 connecting the rotor 43-1-1 and the shaft 21 also rotates synchronously to connect the The synchronization between the conductive joint 43-1 and the line 41 at the rear end of the shaft 21 can avoid wire breakage or loosening of solder joints that may be caused by twisting of the line 41.

The conductive joint 43-1 is a brush 43-11. The applicant only enumerates a conductive joint form of a brush here, and those skilled in the art may design other conductive joint forms according to requirements without departing from the protection scope of the present application.

The elastic conductive mechanism 43-2 is a conductive mechanism that can be elastically deformed under the action of an external force while keeping the circuit open. The elastic conductive mechanism 43-2 can be elastically deformed under the action of an external force. Therefore, when the shaft 21 is translated to the proximal end, the shaft 21 applies pressure to the elastic conductive mechanism 43-2. The elastic conductive mechanism 43-2 is compressed and deformed. When the shaft is translated to the distal end, the pressure applied by the shaft 21 to the elastic conductive mechanism 43-2 is gradually released, and can continue under the effect of the elastic restoring force. The connection state of the conductive joint 43-1 and the shaft 21 is maintained, and stable power supply of the circuit system 400 is maintained. During this motion cycle, the elastic conductive mechanism 43-2 undergoes elastic deformation and performs a reciprocating action, which overcomes the fatigue breakage caused by the constant expansion and contraction of the wire or the looseness of the solder joint or the heating of the joint when the current wire is connected. Not only maintain the good maneuverability of the instrument, but also improve the reliability of the circuit.

The elastic conductive mechanism 43-2 is a spring structure. The spring mechanism may be various spring mechanisms such as a coil spring mechanism, a tower spring mechanism, or a compression spring mechanism. The applicant does not list them here. Those skilled in the art can also design the elastic conductive mechanism 43-2 into other various elastic structures such as an elastomer structure according to needs without departing from the scope of protection in the art.

The power source 500 is a battery 51 or a battery pack 52 or a host 53. The battery 51 or the battery pack 52 is small in size and light in weight, and is suitable for carrying around. It has low requirements on the power environment and is more secure with low voltage power supply. Large-scale surgery; the user can select different power sources 500 according to different use environments and requirements.

The tissue ablation, cutting and fusion system 900 further includes a prompting system 600. The prompting system 600 may prompt the operator of the use state of the instrument according to needs, such as using different sounds to indicate different working conditions, using different lights to indicate the status of the power supply, using different patterns to indicate different working parts, and the like.

The prompting system 600 is a sound prompting device 61, a light prompting device 62, or an image prompting device 63. The applicant only lists the above three types of prompting devices, and those skilled in the art can design different prompting system structures according to requirements without departing from the scope of protection of the present application.

The tissue ablation, cutting and fusion system 900 further includes a smoke exhaust system 700; the smoke exhaust system 700 includes a smoke outlet 71, a smoke exhaust pipe 72, and a smoke inlet 73. The smoke outlet 71 of the smoke exhaust system 700 can be connected to a medical negative pressure source, and the smoke generated during the surgery is extracted from the body in time to ensure the clarity of the surgical field of vision and the operation process is safer and more reliable.

The tissue ablation, cutting and fusion system 900 further includes a water supply / drainage system 800; the water supply / drainage system 800 includes a water outlet 81, a drainage pipe 82, and a water inlet 83. The drainage pipe 82 of the water supply / drainage system 800 may be either a drainage pipe or a water supply pipe. During the surgery, the doctor can inject physiological saline or other solvents into the surgical site through the water supply / drainage system 800 according to the needs of the surgery, and can also timely remove blood or sewage from the surgical site through the water supply / drainage system 800. To ensure smooth operation.

In clinical use, connect the power supply 500 to the circuit system 400 through the electrical interface 43-3, turn on the power switch, pull the trigger 11-1, and drive the inner rod 21-1 to move proximally The working surface 31 is closed, the working part 300 clamps the tissue to be processed, and according to the operation situation, the cutting position 12-1 or the fusion position 12-2 of the gear adjustment button 12 is selected to be pressed. The gear adjustment button 12 turns on the controller 42, the circuit system 400 turns on the power supply 500 and the electric heating device 32, and the electric heating device 32 starts to generate heat, and ablates, cuts or fuses the tissue. In this process, the elastic conductive mechanism 43-2 is elastically deformed under the thrust of the inner rod 21 to maintain stable power supply of the circuit system 400. After the operation is completed, the trigger 11-1 is released, the trigger 11-1 is reset by the reset mechanism 16, the inner rod 21-1 is moved to the distal end, the working surface 32 is opened, and it is completed once During the tissue processing, at this time, the external force received by the elastic conductive mechanism 43-2 is gradually eliminated, and the connection state of the conductive joint 43-1 and the shaft 21 is maintained under the effect of the elastic restoring force, and is still maintained. The circuit system 400 provides stable power. When the working surface 32 needs to be rotated, the knob 23 only needs to be rotated. The knob 23 drives the shaft 21 to rotate, and the working surface 32 connected to the shaft 21 is rotated accordingly. During the rotation, since the rotor 43-1-1 can rotate synchronously with the shaft 21, it is maintained between the conductive joint 43-1 and the line 41 at the rear end of the shaft 21 Synchronization can avoid wire breakage, loosening of solder joints, or joint heating that may be caused by twisting of the line 41. Therefore, stable power supply of the circuit system 400 is ensured. Select different tissue parts in turn, and repeatedly pull and release the trigger 11-1 to complete the surgical operation. The operation is very simple.

The tissue ablation, cutting and fusion system of the present invention includes a handle assembly 100, a shaft assembly 200, a work section 300, a circuit system 400, and a power source 500. The circuit system 400 is provided with an elastic electrical interface device 43; the circuit system 400 is connected to the power supply 500 through the elastic electrical interface device 43. An electric heating device 32 provided on the work section 300 is connected to the power source 500 through the circuit system 400. The elastic electrical interface device 43 includes a conductive joint 43-1, an elastic conductive mechanism 43-2, and an electrical interface 43-3. The conductive joint 43-1 includes a rotor 43-1-1 and a stator 43-1-2. When the shaft 21 of the shaft assembly 200 rotates, the rotor 43-1-1 can rotate synchronously, and synchronization is maintained between the conductive joint 43-1 and the line 41 at the rear end of the shaft 21, It can avoid that the wires 41 may be broken due to the twisting of the wires 41 or the solder joints are loosened or the joints become hot. . The elastic conductive mechanism 43-2 is a conductive mechanism that can be elastically deformed under the action of an external force while keeping the circuit open. When the shaft 21 is translated, the elastic conductive mechanism 43-2 is elastically deformed and reciprocates. This action overcomes the fatigue breakage, loose solder joints, or joint heating caused by the constant expansion and contraction of the wire when the current wire is connected. The tissue ablation, cutting and fusion system of the invention not only maintains the good maneuverability of the instrument, but also improves the reliability of the circuit.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the three-dimensional structure of the working surface of the tissue ablation, cutting and fusion system of the present invention when it is opened.

FIG. 1-1 is a schematic view of the three-dimensional structure when the working surface of FIG. 1 is closed.

FIG. 2 is a front view of FIG. 1.

Fig. 2-1 is a sectional view taken along the line A-A in Fig. 2.

Fig. 2-2 is an enlarged view of a portion B in Fig. 2-1.

Fig. 3 is a front view of Fig. 1-1.

Fig. 3-1 is a sectional view taken along the line C-C in Fig. 3.

FIG. 4 is a schematic structural diagram of a trigger assembly of a tissue ablation, cutting and fusion system of the present invention.

FIG. 5 is a schematic structural diagram of a shaft assembly of a tissue ablation, cutting and fusion system of the present invention.

Fig. 5-1 is a sectional view taken along the line D-D in Fig. 5.

FIG. 6 is a schematic diagram of the three-dimensional structure of the tissue ablation, cutting and fusion system of the present invention including a water supply / drainage system.

FIG. 6-1 is an enlarged view at E in FIG. 6.

FIG. 7 is a schematic diagram of the three-dimensional structure of the tissue ablation, cutting and fusion system of the present invention including a clamping forceps.

FIG. 7-1 is an enlarged view at F in FIG. 7.

FIG. 8 is a schematic diagram of the three-dimensional structure of the tissue ablation, cutting and fusion system of the present invention with a battery and a battery pack.

FIG. 9 is a schematic diagram of the three-dimensional structure of the tissue ablation, cutting and fusion system of the present invention with a host.

In the above picture:

100 is a handle assembly, 200 is a shaft assembly, 300 is a working part, 400 is a circuit system, 500 is a power source, 600 is a prompt system, 700 is a smoke exhaust system, 800 is a water supply / drainage system, 900 is a tissue ablation of the present invention, Cutting and fusion system.

On the handle assembly:

11 is a trigger assembly, 12 is a gear adjustment button, 13 is a shaft connection mechanism, 14 is a housing, 15 is a fixing mechanism, 16 is a reset mechanism, and 17 is a force limiting mechanism.

11-1 is the trigger, 11-2 is the rocker arm, 11-3 is the slider; 11-1-1 is the trigger shaft, 11-1-2 is the rocker drive shaft, 11-2-1 is the pivot of the rocker arm, 11-2-2 is a moving chute, 11-2-3 is a pushing block slot, 11-3-1 is a moving pushing block, 11-3-2 is a sliding convex step, and 11-3-3 is a working boss .

12-1 is the cutting gear, 12-2 is the fusion gear, and 12-3 is the lever mechanism.

15-1 is the positioning chute.

17-1 is a spring force limiting mechanism.

On the shaft assembly:

21 is a shaft, 22 is a connecting component, and 23 is a knob.

21-1 is the inner rod and 21-2 is the outer rod.

On the work department:

31 is a working surface, 32 is an electric heating device, 33 is a rotating shaft; 31-1 is a distal working surface, 31-2 is a proximal working surface; 301 is a first working part, and 302 is a second working part.

On the circuit system:

41 is a line, 42 is a controller, 43 is a flexible electrical interface device, and 44 is an insulation layer.

41-1 is a conductive core rod, 43-1 is a conductive joint, 43-2 is an elastic conductive mechanism, 43-3 is an electrical interface; 43-1-1 is a rotor, 43-1-2 is a stator, and a brush 43- 11.

On the power:

51 is a battery, 52 is a battery pack, and 53 is a host.

On the system:

61 is a sound prompting device, 62 is a light prompting device, and 63 is an image prompting device.

Smoke extraction system:

71 is a smoke outlet, 72 is a smoke exhaust pipe, and 73 is a smoke inlet.

On the water supply / drainage system:

81 is a water outlet, 82 is a drainage pipe, and 83 is a water inlet.

detailed description

Example: Tissue ablation, cutting and fusion system of the present invention

1 to 6-1, the tissue ablation, cutting and fusion system 900 of this embodiment includes a handle assembly 100, a shaft assembly 200, a work section 300, a circuit system 400, a power supply 500, a prompting system 600, and a smoke exhaust system 700.

The handle assembly 100 includes a trigger assembly 11, a gear adjustment button 12, a shaft connection mechanism 13 and a housing 14, a fixing mechanism 15, a reset mechanism 16, and a force limiting mechanism 17. The trigger assembly 11 is fixedly mounted on the casing (14) through the fixing mechanism 15, and a gear adjustment button 12 and a shaft connection mechanism 13 are provided on the casing 14.

The shaft assembly 200 includes a shaft 21, a connection assembly 22 and a knob 23.

The working part 300 includes two working surfaces 31, and one of the working surfaces 31 is provided with an electric heating device 32.

The circuit system 400 includes a line 41, a controller 42, and a flexible electrical interface device 43. The circuit system 400 is connected to the power source 500 through the elastic electrical interface device 43.

The proximal end of the shaft assembly 200 is connected to the handle assembly 100 through the shaft connection mechanism 13; the distal end of the shaft assembly 200 is connected to the working part 300; the electric heating device 32 is connected to the circuit system 400 is connected to the power supply 500.

Referring to FIG. 3, the trigger assembly 11 includes a trigger 11-1, a rocker arm 11-2, and a slider 11-3; the trigger 11-1 is provided with a trigger shaft 11-1-1 and a rocker drive shaft 11- 1-2; the rocker arm 11-2 includes a rocker arm fulcrum 11-2-1, a movement chute 11-2-2, and a pusher block groove 11-2-3; the slider 11-3 contains a motion pusher Block 11-3-1, sliding convex step 11-3-2 and working boss 11-3-3; the trigger shaft 11-1-1 and the fixing mechanism 15 are connected together and fixed to the housing 14; one end of the rocker drive shaft 11-1-2 is connected to the trigger 11-1, and the other end is embedded in the movement chute 11-2-2; the rocker arm fulcrum 11-2- 1 and the fixing mechanism 15 are connected together, and the rocker arm 11-2 is movably installed in the housing 14; the moving pusher block 11-3-1 is embedded in the pusher block slot 11 -2-3, the sliding convex step 11-3-2 is embedded in the positioning chute 15-1 of the fixing mechanism 15 and is connected to the fixing mechanism 15; the trigger 11-1 is pulled , The trigger 11-1 rotates around the trigger rotating shaft 11-1-1, drives the rocker arm drive shaft 11-1-2 to reciprocate along the moving chute 11-2-2, thereby pushing the rocker Arm 1 1-2 swings back and forth around the rocker fulcrum 11-2-1; the back and forth swing of the rocker 11-2 pushes the moving pusher 11-3-inlaid in the pusher block slot 11-2-3 1 thereby driving the slider to linearly move back and forth along the positioning chute 15-1, thereby closing and opening the working surface 31 of the working part 300.

In this embodiment, the gear adjustment button 12 includes a cutting gear 12-1 and a fusion gear 12-2; the cutting gear 12-1 and the fusion gear 12-2 are linked together by a lever mechanism 12-3, so that The cutting position 12-1 and the fusion position 12-2 cannot be pressed simultaneously. The cutting gear 12-1 and the fusion gear 12-2 cannot be pressed at the same time, which can ensure that no misoperation occurs during clinical use.

In this embodiment, the handle assembly 100 includes a reset mechanism 16. In this embodiment, the reset mechanism 16 is a combination of a torsion spring mechanism 16-1 and a spring mechanism 16-2. The torsion spring mechanism 16-1 is provided at the trigger shaft 11-1-1, and the spring mechanism 16-2 is provided at the proximal end of the positioning slide 15-1 of the fixing mechanism 15 when the When the trigger 11-1 is described, the torsion spring mechanism 16-1 is compressed, the inner rod 21-1 is moved to the proximal end, and the spring mechanism 16-2 is compressed and deformed. When the trigger 11-1 is released Under the action of the torsion spring mechanism 16-1 and the spring mechanism 16-2, the inner rod 21-1 moves to the distal end, and the trigger 11-1 is automatically reset.

Those skilled in the art can also design various resetting mechanisms as required, and install one or more of the resetting mechanisms 16 in different parts of the instrument as needed without departing from the scope of protection of the present application.

In this embodiment, the handle assembly 100 includes a force limiting mechanism 17. The force-limiting mechanism 17 can limit the working pressure transmitted to the working part 300 through the trigger assembly 11. When the force-limiting mechanism 17 acts, the operator applies the trigger 11-1 to the triggering mechanism 11-1 The maximum working pressure of the working part 300 is constant. Generally, during the ablation, cutting and fusion of soft tissue, the maximum working pressure can be limited to 80N or less. Of course, those skilled in the art can set the limit of the maximum working pressure defined by the force limiting mechanism 17 as needed, without departing from the protection scope of the present application.

In this embodiment, the force limiting mechanism 17 is a spring force limiting mechanism 17-1, and the spring force limiting mechanism 17-1 is disposed at the proximal end of the working boss 11-3-3 of the slider 11-3. When the inner rod 21-1 moves to the proximal end, the working boss 11-3-3 presses the spring force limiting mechanism 17-1, and the spring force limiting mechanism 17-1 is elastically deformed to reach The effect of limiting the amount of work pressure.

Those skilled in the art may also design other various types of force limiting mechanisms such as an elastic body force limiting mechanism or a compression spring force limiting mechanism without departing from the scope of protection of the present application.

During clinical use, the working surface 31 needs to be rotated to an appropriate position according to the different parts of the tissue to be processed. Therefore, in this embodiment, the shaft assembly 200 includes a knob 23, which can drive the knob 23 The shaft 21 performs a rotational movement.

The shaft 21 includes an inner rod 21-1 and an outer rod 21-2; the working surfaces 31 are connected to the distal ends of the inner rod 21-1 and the outer rod 21-2, respectively; when the inner rod 21- 1 When the proximal end is moved, the working surface 31 is closed; when the inner rod 21-1 is moved toward the distal end, the working surface 31 is opened. Turning the knob 23 can drive the inner rod 21-1 and the outer rod 21-2 to rotate, and then drive the working surface 31 to perform a rotational movement.

In this embodiment, the elastic electrical interface device 43 includes a conductive joint 43-1, an elastic conductive mechanism 43-2, and an electrical interface 43-3. One end of the conductive joint 43-1 is connected to the electric heating device 32 through the line 41, and the other end is connected to the elastic conductive mechanism 43-2; the other end of the elastic conductive mechanism 43-2 is connected to the electrical interface. 43-3 are connected together, and the electrical interface 43-3 is connected to the power supply 500.

Because the rotor 43-1-1 can rotate synchronously with the shaft 21, the line 41 connecting the rotor 43-1-1 and the shaft 21 also rotates synchronously to connect the The synchronization between the conductive joint 43-1 and the line 41 at the rear end of the shaft 21 can avoid wire breakage or loosening of solder joints or joint heating caused by twisting of the line 41.

In this embodiment, the conductive joint 43-1 is a brush 43-11. The applicant only enumerates a conductive joint form of a brush here, and those skilled in the art may design other conductive joint forms according to requirements without departing from the protection scope of the present application.

In this embodiment, the elastic conductive mechanism 43-2 is a coil spring mechanism in a spring structure. The spring mechanism may also be various spring mechanisms such as a tower spring mechanism or a compression spring mechanism. The applicant does not list them here. Those skilled in the art also design the elastic conductive mechanism 43-2 into other various elastic structures, such as an elastomer structure, without departing from the scope of protection in the art.

8 and 9, the power source 500 may be a battery 51, a battery pack 52, or a host 53. The battery 51 or the battery pack 52 is small in size and light in weight, and is suitable for carrying around. It has low requirements on the power environment and is more secure with low voltage power supply. Large-scale surgery; the user can select different power sources 500 according to different use environments and requirements.

In this embodiment, the specific circuit connection mode is as follows:

Positive line: The positive electrode of the electric heating device 32 is connected to the line 41 provided in the core of the inner rod 21-1. In order to enhance the strength of the inner rod 21-1 during translation and clamping, this part The line 41 is provided as a rigid conductive core rod 41-1. An insulating layer 44 is provided between the conductive core rod 41-1 and the inner rod 21-1. One end of the conductive core rod 41-1 is connected to the The other end of the positive electrode of the electric heating device 32 is connected to the positive electrode of the rotor 43-1-1, and the other end of the positive electrode of the rotor 43-1-1 and the positive electrode of the stator 43-1-2 are connected by a brush. The other end of the positive electrode of the stator 43-1-2 is connected to the positive electrode of the elastic conductive mechanism 43-2, and the other end of the positive electrode of the elastic conductive mechanism 43-2 is connected to the electrical interface. The positive electrode of 43-3 is connected to the positive electrode of the power supply 500 via the electrical interface 43-3.

Negative electrode line: The negative electrode of the electric heating device 32 is connected to the distal end of the conductive inner rod 21-1. An insulating layer 44 is provided between the inner rod 21-1 and the outer rod 21-2. The proximal end of the inner rod 21-1 is connected to the negative electrode of the rotor 43-1-1 via the line 41, and the other end of the negative electrode of the rotor 43-1-1 and the stator 43-1- The negative electrode of 2 is connected by means of a brush. The other end of the negative electrode of the stator 43-1-2 is connected to the negative electrode of the elastic conductive mechanism 43-2. The other end of the negative electrode of the elastic conductive mechanism 43-2 is One end is connected to the negative electrode of the electrical interface 43-3, and is connected to the negative electrode of the power supply 500 via the electrical interface 43-3.

In this embodiment, the working current flows in through the positive electrode of the electrical interface 43-3, and flows through the elastic conductive mechanism 42 into the stator 43-1-2 through the positive electrode of the stator 43-1-2. After the stator 43-1-2 flows out, it flows into the rotor 43-1-1 through the positive electrode of the rotor 43-1-1, and flows out from the rotor 43-1-1 from the conductive core 41 The proximal end of -1 flows into the conductive core rod 41-1, flows through the conductive core rod 41-1, enters the electric heating device 32 from the positive electrode of the electric heating device 32, and drives the electric heating device 32 The heat is generated, and the current then flows out from the negative electrode of the electric heating device 32 and enters the distal end of the inner rod 21-1, flows through the inner rod 21-1, and flows out from the proximal end of the inner rod 21-1. And enters the negative electrode of the rotor 43-1-1, flows out through the negative electrode of the rotor 43-1-1, enters the negative electrode of the stator 43-1-2, and enters the negative electrode after passing through the stator 43-1-2. The elastic conductive mechanism 43-2 flows into the electrical interface 43-3 from the distal end of the elastic conductive mechanism 43-2 after flowing through the elastic conductive mechanism 43-2, and flows into the electrical interface 43-3 through the electrical interface 43-3. The negative electrode of the power supply 500.

Referring to FIGS. 2-1 and 8, the tissue ablation, cutting and fusion system of this embodiment includes a prompting system 600. The prompting system 600 may prompt the operator of the use state of the instrument according to needs, such as using different sounds to indicate different working conditions, using different lights to indicate the status of the power supply, using different patterns to indicate different working parts, and the like.

The prompting system 600 in the present embodiment shows three prompting devices: a sound prompting device 61, a light prompting device 62, and an image prompting device 63. Those skilled in the art can design different prompting system structures according to requirements without departing from the scope of protection of this application.

In this embodiment, the tissue ablation, cutting and fusion system 900 includes a smoke exhaust system 700. The smoke exhaust system 700 includes a smoke outlet 71, a smoke exhaust pipe 72 and a smoke inlet 73. The smoke outlet 71 of the smoke exhaust system 700 can be connected to a medical negative pressure source, and the smoke generated during the surgery is extracted from the body in time to ensure the clarity of the surgical field of vision and the operation process is safer and more reliable.

Referring to FIG. 6, the tissue ablation, cutting and fusion system of the present invention may further include a water supply / drainage system 800. The water supply / drainage system 800 includes a water outlet 81, a drainage pipe 82 and a water inlet 83. The drainage pipe 82 of the water supply / drainage system 800 may be either a drainage pipe or a water supply pipe. During the surgery, the doctor can inject physiological saline or other solvents into the surgical site through the water supply / drainage system 800 according to the needs of the surgery, and can also timely remove blood or sewage from the surgical site through the water supply / drainage system 800. To ensure smooth operation. At the same time, the water supply / drainage system 800 can also be used as the smoke exhaust system 700, and the smoke generated during the surgery is discharged from the body in time to ensure the clarity of the surgical field of vision.

In clinical use, connect the power supply 500 to the circuit system 400 through the electrical interface 43-3, turn on the power switch, pull the trigger 11-1, and drive the inner rod 21-1 to move proximally The working surface 31 is closed, the working part 300 clamps the tissue to be processed, and according to the operation situation, the cutting position 12-1 or the fusion position 12-2 of the gear adjustment button 12 is selected to be pressed. The gear adjustment button 12 turns on the controller 42, and the circuit system 400 turns on the power supply 500 and the electric heating device 32. The electric heating device 32 starts to generate heat, and ablates, cuts, or fuses the tissue. In this process, the elastic conductive mechanism 43-2 is elastically deformed under the thrust of the inner rod 21 to maintain stable power supply of the circuit 41 system 400. After the operation is completed, the trigger 11-1 is released, the trigger 11-1 is reset by the reset mechanism 16, the inner rod 21-1 is moved to the distal end, the working surface 32 is opened, and it is completed once During the tissue processing, at this time, the external force received by the elastic conductive mechanism 43-2 is gradually eliminated, and the connection state of the conductive joint 43-1 and the shaft 21 is maintained under the effect of the elastic restoring force, and is still maintained. The circuit system 400 provides stable power. When the working surface 32 needs to be rotated, the knob 23 only needs to be rotated. The knob 23 drives the shaft 21 to rotate, and the working surface 32 connected to the shaft 21 is rotated accordingly. During the rotation, since the rotor 43-1-1 can rotate synchronously with the shaft 21, synchronization between the conductive joint 43-1 and the line 41 at the rear end of the telescopic shaft 21 is maintained. It can avoid the electric wire breakage or the loosening of the solder joint or the heating of the joint that may be caused by the twist of the line 41. Therefore, stable power supply of the circuit system 400 is ensured. Select different tissue parts in turn, and repeatedly pull and release the trigger 11-1 to complete the surgical operation. The operation is very simple.

The tissue ablation, cutting and fusion system of this embodiment adopts the design of an elastic electrical interface. When the shaft 21 rotates, the rotor 43-1-1 of the conductive joint 43-1 and the shaft 21 can rotate synchronously. By maintaining synchronization between the conductive joint 43-1 and the line 41 at the rear end of the shaft 21, it is possible to avoid wire breakage or loosening of solder joints or joint heating caused by twisting of the wire. When the inner rod 21-1 is reciprocated in translation, the elastic conductive device 43-21 undergoes elastic deformation and performs a reciprocating action, which overcomes fatigue fracture or loosening of solder joints caused by the constant expansion and contraction of the wire when the wire is connected Or the connector is hot. The tissue ablation, cutting and fusion system of this embodiment not only maintains the good maneuverability of the instrument, but also improves the reliability of the circuit.

In this embodiment, the closing of the working surface 31 is achieved by translation of one working surface 31 to another working surface 31.

Referring to FIG. 7, in practical applications, the two working surfaces 31 may be closed by rotating the working surfaces 31 about a rotation axis 33. The working part 300 includes a first working part 301 and a second working part 302; a proximal end of the first working part 301 is connected to a distal end of the inner rod 21-1, and the second working part 302 The proximal end is connected to the distal end of the outer rod 21-2. When the inner rod 21-1 moves to the proximal end, the first working part 301 is driven to rotate about the rotation shaft 33, and the first work The part 301 and the second working part 302 are closed. With this kind of working part design, the working part 300 is very small in the closed state, and can enter the abdominal cavity through a small channel, and then open the working part 300 for surgical operation, which is particularly suitable for various endoscopic minimally invasive surgery. Use.

It should be noted that the structures disclosed and described herein may be replaced with other structures having the same effect, and the embodiments described in the present invention are not the only structures that implement the present invention. Although the preferred embodiments of the present invention have been described and described herein, those skilled in the art will clearly know that these embodiments are merely examples, and those skilled in the art can make countless changes and improvements. And instead, without departing from the present invention, the protection scope of the present invention should be defined according to the spirit and scope of the claims appended to the present invention.

Claims

The tissue ablation, cutting and fusion system is characterized by:

A. The tissue ablation, cutting and fusion system (900) includes a handle assembly (100), a shaft assembly (200), a work section (300), a circuit system (400), and a power supply (500):

B. The handle assembly (100) includes a trigger assembly (11), a gear adjustment button (12), a shaft connection mechanism (13), and a housing (14); the trigger assembly (11), the gear adjustment button ( 12) a shaft connecting mechanism (13) is provided on the casing (14);

C. The shaft assembly (200) includes a shaft (21) and a connection assembly (22);

D. The working part (300) includes at least two working surfaces (31), and at least one of the working surfaces (31) is provided with an electric heating device (32);

E. The circuit system (400) includes a line (41), a controller (42), and a flexible electrical interface device (43); the circuit system (400) passes the flexible electrical interface device (43) and the power supply (500) Connected;

F. The proximal end of the shaft assembly (200) is connected to the handle assembly (100) through the shaft connection mechanism (13); the distal end of the shaft assembly (200) is connected to the working part (300) The electric heating device (32) is connected to the power source (500) through the circuit system (400).
The tissue ablation, cutting and fusion system according to claim 1, wherein the handle assembly (100) further comprises a fixing mechanism (15); the trigger assembly (11) is fixedly installed through the fixing mechanism (15) On the casing (14).
The tissue ablation, cutting and fusion system according to claim 2, characterized in that the trigger assembly (11) comprises a trigger (11-1), a rocker arm (11-2), and a slider (11-3); The trigger (11-1) is provided with a trigger rotating shaft (11-1-1) and a rocker driving shaft (11-1-2); the rocker (11-2) includes a rocker fulcrum (11-2-) 1), moving chute (11-2-2) and push block card slot (11-2-3); the slider (11-3) contains the moving push block (11-3-1), sliding convex step (11-3-2) and working boss (11-3-3); the trigger shaft (11-1-1) and the fixing mechanism (15) are connected together and fixed to the casing (14 ); One end of the rocker drive shaft (11-1-2) is connected to the trigger (11-1), and the other end is embedded in the movement chute (11-2-2); the rocker An arm fulcrum (11-2-1) and the fixing mechanism (15) are connected together, and the rocker arm (11-2) is movably installed in the housing (14); the movement pushing block (11-3-1) is embedded in the pushing block groove (11-2-3), and the sliding convex step (11-3-2) is embedded in a positioning slide groove of the fixing mechanism (15) ( 15-1), connected with the fixing mechanism (15); triggering the trigger (11-1), the trigger (11-1) The trigger shaft (11-1-1) rotates to drive the rocker arm drive shaft (11-1-2) to reciprocate along the movement chute (11-2-2), thereby pushing the rocker arm ( 11-2) reciprocating swing around the pivot point (11-2-1) of the rocker arm; the reciprocating swing of the rocker arm (11-2) pushes the The moving pusher block (11-3-1) drives the slider to linearly move back and forth along the positioning chute (15-1), so as to close and open the working surface (31) of the working part (300).
The tissue ablation, cutting and fusion system according to claim 1, wherein the gear adjustment button (12) is connected to the controller (42) through the line (41).
The tissue ablation, cutting and fusion system according to claim 1, wherein the gear adjustment button (12) includes a cutting gear (12-1) and a fusion gear (12-2); the cutting gear (12) -1) and the fusion gear (12-2) are linked by a lever mechanism (12-3), so that the cutting gear (12-1) and the fusion gear (12-2) cannot be pressed at the same time.
The tissue ablation, cutting and fusion system according to claim 1, wherein the handle assembly (100) further comprises a reset mechanism (16).
The tissue ablation, cutting and fusion system according to claim 1, wherein the handle assembly (100) further comprises a force limiting mechanism (17).
The tissue ablation, cutting and fusion system according to claim 1, wherein the shaft assembly (200) further comprises a knob (23); the knob (23) can drive the shaft (21) to perform a rotational movement .
The tissue ablation, cutting and fusion system according to claim 8, characterized in that the shaft (21) includes an inner rod (21-1) and an outer rod (21-2); the working surfaces (31) are respectively Connected to the distal end of the inner rod (21-1) and the outer rod (21-2); when the inner rod (21-1) moves to the proximal end, the working surface (31) is closed; When the inner rod (21-1) moves to the far end, the working surface (31) is opened; turning the knob (23) can drive the inner rod (21-1) and the outer rod (21-2) ), And then the working surface (31) is driven to rotate.
The tissue ablation, cutting and fusion system according to claim 1, wherein the elastic electrical interface device (43) comprises a conductive joint (43-1), an elastic conductive mechanism (43-2), and an electrical interface (43- 3); one end of the conductive joint (43-1) is connected to the electric heating device (32) through the line (41), and the other end is connected to the elastic conductive mechanism (43-2); the elastic conductive The other end of the mechanism (43-2) is connected to the electrical interface (43-3), and the electrical interface (43-3) is connected to the power supply (500).
The tissue ablation, cutting and fusion system according to claim 10, wherein the conductive joint (43-1) comprises a rotor (43-1-1) and a stator (43-1-2); and the rotor (43-1-2) 43-1-1) can rotate; the distal end of the rotor (43-1-1) and the proximal end of the shaft (21) are connected together, and when the shaft (21) rotates, the The rotor (43-1-1) can rotate synchronously; the proximal end of the stator (43-1-2) is connected to the distal end of the elastic conductive mechanism (43-2).
The tissue ablation, cutting and fusion system according to claim 10, wherein the conductive joint (43-1) is a brush (43-11).
The tissue ablation, cutting and fusion system according to claim 10, wherein the elastic conductive mechanism (43-2) is a conductive mechanism that can be elastically deformed under the action of an external force while keeping the circuit open.
The tissue ablation, cutting and fusion system according to claim 13, wherein the elastic conductive mechanism (43-2) is a spring structure.
The tissue ablation, cutting and fusion system according to claim 1, wherein the power source (500) is a battery (51), or a battery pack (52) or a host (53).
The tissue ablation, cutting and fusion system according to claim 1, wherein the tissue ablation, cutting and fusion system (900) further comprises a prompting system (600).
The tissue ablation, cutting and fusion system according to claim 16, wherein the prompting system (600) is a sound prompting device (61), a light prompting device (62), or an image prompting device (63).
The tissue ablation, cutting and fusion system according to claim 1, characterized in that the tissue ablation, cutting and fusion system (900) further includes a smoke exhaust system (700); and the smoke exhaust system (700) includes a smoke outlet (71), smoke exhaust pipe (72), and smoke inlet (73).
The tissue ablation, cutting and fusion system according to claim 1, characterized in that the tissue ablation, cutting and fusion system (900) further comprises a water supply / drainage system (800); and the water supply / drainage system (800) includes Water outlet (81), drain pipe (82) and water inlet (83).